Diaphragm-valve.



G.V KARLSON. DIAPER AGSI VA LVE.

APPLIUATKUN FILED SEPT.5.1

Patented Dec. 1-5. 191 1.

INVENTOR ATTokNEv GUSTAF V VICTOR KARLSON, Cl

E :IILADELPHIA, PENNSYLVANIA. ASSIGNOR TO AMERICAN GASACCUMULATGR COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, A. CORPORATION 05 N331 JERSEY.

DIAPHBAGHLVALVE.

Specification of Letters Patent.

Application filed September 6, 191%. Serial. No. 788,329.

To (ZZZ 10710721615 may concern".

Be it known that l, Gus'mr Vic roe Kem son, a subject of the King of Sweden, and a resident of ihe city of Philmilelphiu, county of Philadelphia, State of Penn vuniu, have invented ccrtuin new and useful Improvements in Dinphru mValves. of which the following is u specification.

This invention relates to diaphragm valves uud more particularly to valv s of this character which are adapted -:o be. used in connection with pressure gages, and has for an object to provide a valve. whereinlhe construction is such that. the pressure may be controlled or regulated and not permitted to rush into the gage under full head.

.lc has been found in practice um dire phregni valves us heretofore conslructe and as used in connection with or like indicating mechanisms. have. some dread vantages. The principal trouble which llllfi developed in the commercial use oi. such valve mechanism i133 been, especiull where. high pressures are used, thut the :lluid surges into the gage with such force us to deflect the indiczu'ging needle to it grew v l jf e then the uc munber of pou upon the This action soon \lSL'r: the. delicure me ounism to our. of order or unbalanced so rluii i will no; (Hl'l v; indicate. the desired iifliii'iniriinir. s cut invention 1 hure eviscd wherein the foregoing defects overcome and cl'n 1mm, and whereby the pressure fluid may be so thron. l and re! iluted as to render its admission to he :1 gradual one, free from slmcl; but. 1 ing in pressure in such a. munner indicating needle moves promprlv and without vibrulion or osclluriuu to We point indicating the pressure dc it has for u furlher an n novel smieture when, the gage may be relieved uiler been when.

ll 'furlher consists of other novel features of invention. as will be. hereinafter fully discussed in the uccmmmnving specification and claims. I

In the drawin s:---Figure '1. a view in front elevation of u gage and vulve body embodying my invention, certain parts of the latter being removed also to provide in iue presMu-c in a reading has gage in side elevation and ulso showing the valve body in t "unsverse section; Fig. '3 represents a plan of a spacing element eniploy'ed in the valve structure; ondVFig. 4 represents a plan of an uportured disk also embodied in the valve structure.

Similar numerals of reference designate correspondingparts in the drawings.

1 designates the valve body provided with the valve seat 2 which, in tlie present instance, is encircled by a groove 3 serving the purpose of a channel for communication between the valve inlet puss-age or conduit l and the outlet channel 5, the latter serv ing as a means to conduct pressure fluid to the fitting 6 of the gage 7 or like device. The groove 3 also serves at certain times to direct the pressure fluid to an exhaust channel 8, which is controlled in the present instance by a needle valve 9 operable by the lhumh screw 10, the. said valve having a longitudinal groove 9 along which the fluid travels in leaving the channel 8.

ill design-nice a diaphragm positioned udjucenl the valve. seat 9 and adapted lo move hfnvnrd and away from said at in order tlnlbtlie valve opening uurv be opened and closed no desired. The diaphragm 11 in the present instance, sealed within a threaded recess 12 of the valve body, und spaced by means a ring from the disk ll. which is seated ion the wall of the valve sent 2, and provided with apertures 15 and 10, the former norniully ulining with the inlet- (onduit 4., while rho hitter serveus :1 means of coniuiun"Zillion \vilh the u'i'orcsuid groove. 3.

1T designates u screw threaded tubulur closure fitting the recess 12 and having threaded engagement with the valve bod} l in such :1 urunher as in clump the diaphragm 11., ring 13 and disk ll in proper operative position.

18 designutes u bushing provided with a square or hexagonal head 19 and having threaded engagement as shown at 20 with the closure member 17, the relation between these parts being such that the bushingl8 1U iv e moved relative to the closure and thus bring the diaphragm operating plug 21 into engagement with the diaphragm 1.1, or vice verso. In connection with this construction it. will be noted that the plug 21 is screw threaded .ut 92 info the bushing 18 und is furthermore held against rotation Patented Dec. 15, 1914..

siiole to control the fluid relative to ilie closure 17 by providing a eel; screw the end of which enters slot or races 2 1, "formed as a suitable point in the plug connec'ziori reads and 22 it will be notefi. "a fne .rmer are of larger pitch than the leeter, so that bushing 18 is rotated, its lineal movement will loo correspondingly greater lineal movement of the plug 21, this action being substantially e clifi'erentie one whereby a very delicate adjustment of Elle plug may be efi'ected, it will be further stood time the end' 19 the closure 18 is adapt d to receive .12 soeket Wrench or 1' he in *tool Wherc byrhe bushing may receive L accessary rosery movement re effect 1 e proper movement of the plug 21. I

designates e cap having; threaded. e11- gngemcnt with the closure 1'? exrzl adapter overthe end 125 20 the?) else let-eel, as f'ii cll as the bushing 18., is normally proeecee i.

En the operation or like aie ice the bashing 18 is normally 1Cl"&l21 1 in such a position the aiieplrragm l1 engeges e learner firmly the disk 1; hat ille inlet open: 1 is maintained closed and leakage or is prevented.

Lille e0 admit the fiuigl 1m.-

pounds pressure 111 the lizze, the cap 25 is remover so t- 1. esuitaole tool .EB placed in oo l or. upon the end of the bush. mg 18. film bushing 18 is new so it is drawn away fr m the liephragm 11, and in View of the l ec- 1 at he plug :21 is 11 screw threedeol 11cm: Wlfill the bushing and further 11% c1 romt'lon by the set screw locking (1 via, Killer will. be relative movement between x1e lusliing l8 and elleplog 23. with rile res; 2r. that the lee-- ter, non-rotatable part is in 'eci lirzeolly, filiereby permitting the ectueiecl by the resser conseqi communication. eeleloliehecv l 6:151; 1 end the outlet gradually opening {he curler pressure the e smldeu hammering scfiiora o: iiig high pressure fluid on.

rear; 21o em as: is cloneto the gage, out ae same 155* on accurate registering of the pressure is ob mined. After the desired reegiing "she bushlog 18 may be returned normal position so that the diaphragm 11 closes the inlet com Cluil; 4 and the pressure in the gage may then be released by opening the needle valve 9 so that the fluid may readily escape through the channel 5, groove 3, and exhaust passage 8. It is desirable that lie pressure fluid released from the oeherwiec 'wlilerz 551a fileg rlzragm valve s subseqa eml'y opened to take a reading of file gage, such reading if taken immediately would not indicate cor- 1%. will now be apparent that I have devised. complet unitary structure, simple in construction, effective in operation, and well adapted for the purpose intended. Furthermcre it will. be apparent that by my novel. control mechanism gage pressure may be grmiually determined Without subjecting he clsiicele mechanism of the gage to the uclclen impact of an inrusliing fluid under a oressure. l urther it will be apparent lot '57 provhling a means for exhausting afier the fluid under pressure has oclmittecl thereto end after the dim valve has been closed I am enablecl cure more quickly and immediately Mines SllO log; fire erect pressure exerted .iuicl under pressure at subsequent alien the ie admired to the gage.

5) has been fo'ami in practice to 6 seii'isfoc and reliable esults, it is "to be unclezsteod eh e the some is susceptible of modification in various particulars with out rleoarting from the spirit or scope of the invezi n or sacrificing any of isedvan- 1 claili l of Le elmmcfier described, Neely having an inlet channel and an lmnoei, gage sieving communican with said outlet channel, a Valve-plug control communication between lei ch eimel and said outlet channel,

I ureo. to seio'i valve oocly 'ancl said valve plug and l ifierentiel action to 11g from one oosition to "1 valve 2,. in e device of the character described, a valve body having an inlet channel end an outlet channel, a gage having communication wieli said outlet channel, awalve plug adapted $0 control communication between elec channel end eeid outlet channel, e 3103111 3 having screw threaded conneceioi "EViill eaicl valve body and adapted to ocean-i valve e ooshiog threaded rill be unclerstcccl that previous to open diaphragm Valve for the purpose he preferred embodiment mu nice into said: closure and also hevin threaded engagement with said valve plug hy threads of a different pitch from threads connecting said bushing to said closure, whereby said valve ping moves toward or away from said inlet channel at a different speed than said bushing 3. In a device of the character described, valve body having an inlet channel and an outlet channel, a gage having communication with said outlet channel, a valve plug adapted to control communication between said inlet channel and said outlet. channel,

- a closure secured to said valve body and contain said valve plug, means embodying a differential action to shift said valve ,plugfrom one position to another, and means to exhaust fluid pressure from said discharge channel.

4. In a device of the character described, a valve body having an opening thereinand adapted to an inlet channel and an outlet channel com a closure rewith said opening, ino ahly secured in said opening, a diaphr u mounted between said closure and Shirl with in spect'to said channels, a bushing i into said closure, a valve plug adid diaphragm and threaded into 'ng with threads oi a dill'ercnt l co? iected to the closure, and means to prevent rotation of said plug, whereby alve body and transversely disposed the threa ils by which the bushrotary movement of said bushing causes removably secured in said opening, a die-V phragrn mounted between said closure and said valve bod; and transversely disposed with respect to said channels, a bushing threaded into said closure, a valve plug adjacentfsaid diaphragadand threaded into said bushing with threads of a difiierent' pitch from said closure threads, means to prevent rotation of said plug, whereby rotary movement of said bushing causes said valve plug to move toward or away from said diaphragm at a reduced speed from the corresponding movement of said bushing, and means to exhaust the pressure in said dischargechannel after said inlet channel is closed.

In testimony that 1 claim the foregoing V as my invention, 1 have hereunto signed my name this 28th day oi August, A. D. 1913.

GUST-53h Vl'YGlOE KARLSONJ in the presence of Crisis. H. CLAPHAM, CRAWFORD llfiimrnrr. 

